Played Dles can reset on their own timezone

[yonasadiel]

In this proposal, I change the behaviour of "reset played dles at midnight" proposed at #13 . The problem is, different dles have their own reset time: some are reset on their own specific timezone, some reset based on the client's timezone. So I propose a change:

• Every dles will have "resetTime" to indicate whether the dles should reset on what timezone. By default, the value is "client", which means it will follow the client device's timezone. This is backward compatible, following the current behaviour.
• Instead of storing the date of the last reset, we store the time too (in ISO format). This way, we can reset each dles individually.
• Add some of known reset time.

I can help to check the reset time of the dles as many as I can, but I want to get opinions before committing more time on this idea.

Additionally, I also have an idea to show some timer / small alert if some of the favourited dles is approaching the deadline but not marked yet, so it will help to keep daily streak? But this might be too much UI disruption for not much benefit, considering most of dles doesn't have concept of daily streak anyway.